5 files changed, 44 insertions, 5 deletions
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index df0ae869ee51..76515c33e639 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -300,6 +300,38 @@ int sdw_transfer(struct sdw_bus *bus, struct sdw_msg *msg)
 }
 
 /**
+ * sdw_show_ping_status() - Direct report of PING status, to be used by Peripheral drivers
+ * @bus: SDW bus
+ * @sync_delay: Delay before reading status
+ */
+void sdw_show_ping_status(struct sdw_bus *bus, bool sync_delay)
+{
+	u32 status;
+
+	if (!bus->ops->read_ping_status)
+		return;
+
+	/*
+	 * wait for peripheral to sync if desired. 10-15ms should be more than
+	 * enough in most cases.
+	 */
+	if (sync_delay)
+		usleep_range(10000, 15000);
+
+	mutex_lock(&bus->msg_lock);
+
+	status = bus->ops->read_ping_status(bus);
+
+	mutex_unlock(&bus->msg_lock);
+
+	if (!status)
+		dev_warn(bus->dev, "%s: no peripherals attached\n", __func__);
+	else
+		dev_dbg(bus->dev, "PING status: %#x\n", status);
+}
+EXPORT_SYMBOL(sdw_show_ping_status);
+
+/**
  * sdw_transfer_defer() - Asynchronously transfer message to a SDW Slave device
  * @bus: SDW bus
  * @msg: SDW message to be xfered
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index 30b8c628fdbd..93929f19d083 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -756,6 +756,14 @@ cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num)
 }
 EXPORT_SYMBOL(cdns_reset_page_addr);
 
+u32 cdns_read_ping_status(struct sdw_bus *bus)
+{
+	struct sdw_cdns *cdns = bus_to_cdns(bus);
+
+	return cdns_readl(cdns, CDNS_MCP_SLAVE_STAT);
+}
+EXPORT_SYMBOL(cdns_read_ping_status);
+
 /*
  * IRQ handling
  */
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h
index 595d72c15d97..ca9e805bab88 100644
--- a/drivers/soundwire/cadence_master.h
+++ b/drivers/soundwire/cadence_master.h
@@ -177,6 +177,8 @@ enum sdw_command_response
 cdns_xfer_msg_defer(struct sdw_bus *bus,
 		    struct sdw_msg *msg, struct sdw_defer *defer);
 
+u32 cdns_read_ping_status(struct sdw_bus *bus);
+
 int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);
 
 int cdns_set_sdw_stream(struct snd_soc_dai *dai,
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 15fe083e0402..244209358784 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1480,6 +1480,7 @@ static struct sdw_master_ops sdw_intel_ops = {
 	.set_bus_conf = cdns_bus_conf,
 	.pre_bank_switch = intel_pre_bank_switch,
 	.post_bank_switch = intel_post_bank_switch,
+	.read_ping_status = cdns_read_ping_status,
 };
 
 /*
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index ba3c2ce84817..b33d5db494a5 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -169,7 +169,7 @@ struct qcom_swrm_ctrl {
 	u8 wcmd_id;
 	struct qcom_swrm_port_config pconfig[QCOM_SDW_MAX_PORTS];
 	struct sdw_stream_runtime *sruntime[SWRM_MAX_DAIS];
-	enum sdw_slave_status status[SDW_MAX_DEVICES];
+	enum sdw_slave_status status[SDW_MAX_DEVICES + 1];
 	int (*reg_read)(struct qcom_swrm_ctrl *ctrl, int reg, u32 *val);
 	int (*reg_write)(struct qcom_swrm_ctrl *ctrl, int reg, int val);
 	u32 slave_status;
@@ -1355,10 +1355,6 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 	ctrl->bus.compute_params = &qcom_swrm_compute_params;
 	ctrl->bus.clk_stop_timeout = 300;
 
-	ctrl->audio_cgcr = devm_reset_control_get_exclusive(dev, "swr_audio_cgcr");
-	if (IS_ERR(ctrl->audio_cgcr))
-		dev_err(dev, "Failed to get audio_cgcr reset required for soundwire-v1.6.0\n");
-
 	ret = qcom_swrm_get_port_config(ctrl);
 	if (ret)
 		goto err_clk;